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 __   _     ______   _    _      ___      _  _   
| || | ||  /_   _// | \  / ||   / _ \\   | \| || 
| '--' ||   -| ||-  |  \/  ||  / //\ \\  |  ' || 
| .--. ||   _| ||_  | .  . || |  ___  || | .  || 
|_|| |_||  /_____// |_|\/|_|| |_||  |_|| |_|\_|| 
`-`  `-`   `-----`  `-`  `-`  `-`   `-`  `-` -`

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Text this: Amplify-and-forward relay selection with outdated channel state information